Computing device.



PATENTBD JAN. 9, 1906.

G. M. BROWN:

GGMPUTING DEVICE.

APPLICATION rum) JULY 27, 1905.

2 SHEBTSSHEET 1.

131' Human No. 809,605. PATENTBD JAN. 9, 1906- G. M. BROWN.

COMPUTING DEVICE.

APPLICATION FILED JULY 27, 1905.

2 SHEBTSSHEET 2.

nuewtoz o G.MB7'0WIL 9 wanes GEORGE M. BROWN, OF OTTO, NEW YORK.

COMPUTING DEVICE.

Specification of Letters Patent.

Patented Jan. 9, 1906.

Application filed y 27,1905. Serial No. 271,501.

To all whom, it may concern:

Be it known that I, GEORGE M. BROWN, a citizen of the United States,residing at Otto, in the county of Cattaraugus and State of New York,have invented certain new and useful Improvements in Computing Devices,of which the following is a specification.

This invention relates to an improved device for rapidly determining thevalue of a certain line of goods at a given price without mathematicalcalculation, and has for its object to produce a device of thischaracter which will have a very large range both in respect to theprices and quantities, which will be very compact in structure, andwhich will be so simple as to render mistakes impossible.

To these ends the invention consists, essentially, of a table dividedinto a number of divisions designated by the even hundreds, saiddivisions being subdivided and numbered soas to give the value of theintermediate numbers between the even hundreds and also of those numbersplus one thousand.

For a full description of the invention and the merits thereof and alsoto acquire a knowledge of the details of construction of the means foreffecting the result reference is to be had to the following descriptionand accompanying drawings, in which Figure 1 is a perspective view of adevice embodying my invention. Fig. 2 is an enlarged view, parts beingbroken away, showing the arrangement of the table. Fig. 3 is a plan viewshowing a modification of the device.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawings by the samereference characters.

In the preferred form the table is arranged upon a cylinder 1, whichrotates upon a shaft 2 and is inclosed within a casing 3, provided withan opening 4, which may be closed with glass, if desirable. The scaleitself is divided into ten divisions 5, which are designated,respectively, by the numerals 1-000, 1 1-100, 12()O, L300, 1-400, 1 500,1600, 1400, 1800, e900. These divisions 5 are subdivided into a numberof vertical or longitudinal columns 6, which are headed by the variousprices. As

shown in the drawings, there are twenty of the columns 6, and the pricesrange from sixty-five cents to one dollar and sixty-five cents. However,any desired number of columns may be employed, according to the range ofprice desired. A rod 7 is employed in connection with the cylinder andis at tached to the casing 3 so that it is parallel with the columns 6.This rod 7 is divided into one hundred transverse divisions 8, which arenumbered from 0 at the top to 99 at the bottom. The columns 6 are alsosubdivided into one hundred parts 9, correspond,- ing to the divisions 8on the rod 7. Each of these spaces 9 is provided with two numbers, theupper one of which designates the value of the goods in quantitiesbetween the hundreds, while the lower one designates the value of thesame quantity of goods plus one thousand units of the goods. Asillustrated in the drawings, the prices given are for one hundredpounds, and in the division 5, designated by 1O0O, the row of figureswhich pass beneath the 0 mark on the rod 7 when the cylinder is rotatedgive the price of one thousand pounds, according to the price perhundred at the top of the columns 6. The spaces 9 in the secondhorizontal row, or those which pass beneath the space marked by thenumeral 1 upon the rod 7, are each provided with two numbers. The uppernumber designates the price of one pound according to the price perhundred pounds at the top of the column, while the lower numeraldesignates the price of one thousand pounds plus the one pound, or onethousand and one pounds. In a similar manner the spaces in the thirdhorizontal row, or those which pass beneath the space marked by thenumeral 2 on the rod 7 are also each provided with two members, theupper one designating the price of two pounds and the lower one theprice of one thousand and two pounds, according to the price per hundredat the head of the column 6, in which the numbers are located. The otherdivisions 5 are subdivided and marked in a similar manner. For instance,in the divisions 5, designated by 11500 the upper numerals in the firsthorizontal row which passes beneath the space marked 0 upon the rod 7designate the price of five hundred pounds at the price per hundredgiven at the head of the column, while the other figure gives the priceof fifteen hundred pounds. The other numerals in the respective spacesare arranged in a similar manner. Should it be desired to find the valueof five hundred and thirteen pounds at one dollar and five cents perhundred, the cylinder 1 is turned until the column headed by $1.05 inthe division marked 1-500 is adjacent the edge of the rod 7. The uppernumeral in the space 9 opposite the space on the rod 7, designated bythe numeral 13, gives the desired value, which is five dollars andthirty-nine cents. The numeral directly below this gives the price offifteen hundred and thirteen pounds at one dollar and five cents perhundred, which is fifteen dollars and eighty-nine cents. In a similarmanner the value of any quantity from one pound to two thousand poundscan be readily determined where the prices range between sixty-fivecents and one dollar and sixty-five cents per hundred.

A modification is shown in which the tables are placed upon a board 10instead of upon a cylinder, and this board is preferably placed in ahorizontal position. In this iiistance two rods 11 are employed, whichare subdivided and numbered similar to the rod 7 and which slide overthe board in guideways 12. The two rods 11 are employed to allow anyportion of the scale'or table to be reached by moving the slide ashorter distance than would be necessary if a single red were employed.The operation of this form is identical with that of the preferred form,except that the rods 1] are moved instead of the scale. Owingto the factthat each of the subdivisions 9 contains two numbers which are employed,as has been heretofore described, the device has twice the range of theusual computing-table of the same size and can be manipulated veryrapidly and accurately.

Having thus described the invention, what is claimed as new is 1 Acomputing device of the character described which is divided into anumber of main divisions designated by the hundreds, each of said maindivisions being divided into a number of columns for the differentprices, and each of the columns being subdivided into one hundredspaces, each of which contains two figures, one of them giving the valueof the quantity of goods designated by the number of hundreds markedupon the main division plus the quantity designated by the position ofthe space in the column, said value being according to the price valueof the column, while the opposite figure gives the value of thatquantity of goods plus one thousand units of the goods.

2. The combination of a computing device of the character describedwhich is divided into a number of main divisions designated by thehundreds, each of sa d main divisions being divided into a number ofcolumns for the different prices, and each of the columns beingsubdivided into one hundred spaces, each of which contains two figures,one of them giving the value of the quantity of goods designated by thenumber of hundreds marked upon the main division plus the quantitydesignated by the position of the space in the column, said value beingaccording to the price value of the column, while the opposite figuregives the value of that quantity of goods plus one thousand units of thegoods, and a rod located over the table and parallel with theprice-columns, said rod being divided into one hundred transversedivisions corresponding to the one hundred spaces in the price-columnsand numbered from O to 99, said numerals designating the number of unitsto be added to the number of hundreds marked upon the main division indetermining the quantity of goods, the device being made so that the rodcanbe brought to any desired portion of the table.

3. The combination of a cylinder having a table of the characterdescribed on the surface thereof, said table being divided into a numberof main divisions running longitudinally of the cylinder, each of themain divisions being divided into a number of columns for the differentprices, and each of the col umns being subdivided into one hundredspaces, each of which contains two figures, one of them giving the valueof the quantity of goods designated by the number of hundreds markedupon the main division plus the quantity designated by the position ofthe space in the column, said value being according to the price valueof the column, while the opposite figure gives the value of thatquantity of goods plus one thousand units of the goods, and a fixed rodlocated adjacent the cylinder and parallel with. the price-columns, saidrod being divided into one hundred transverse divisions corresponding tothe one hundred spaces in the pricecolumns and numbered from 0 to 99,said numerals designating the number of units to be added to the numberof hundreds marked upon the main division in determining the quantity ofgoods, the cylinder being ad apted to rotate so as to bring any desiredportion of the table around to the rod.

In testimony whereof I aflix my signature in presence of two witnesses.

GEORGE M. BROWVN.

